From: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> To: Lee Jones <lee.jones@linaro.org>, Rob Herring <robh+dt@kernel.org>, Benson Leung <bleung@chromium.org>, Guenter Roeck <groeck@chromium.org>, Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>, Alim Akhtar <alim.akhtar@samsung.com>, Andi Shyti <andi@etezian.org>, Mark Brown <broonie@kernel.org>, Sam Protsenko <semen.protsenko@linaro.org>, Pratyush Yadav <p.yadav@ti.com>, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-spi@vger.kernel.org Cc: Rob Herring <robh@kernel.org> Subject: [PATCH v6 4/4] spi: s3c64xx: allow controller-data to be optional Date: Mon, 24 Jan 2022 09:23:47 +0100 [thread overview] Message-ID: <20220124082347.32747-5-krzysztof.kozlowski@canonical.com> (raw) In-Reply-To: <20220124082347.32747-1-krzysztof.kozlowski@canonical.com> The Samsung SoC SPI driver requires to provide controller-data node for each of SPI peripheral device nodes. Make this controller-data node optional, so DTS could be simpler. Suggested-by: Rob Herring <robh@kernel.org> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Reviewed-by: Sam Protsenko <semen.protsenko@linaro.org> Reviewed-by: Andi Shyti <andi@etezian.org> --- drivers/spi/spi-s3c64xx.c | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c index 8755cd85e83c..386550fca81c 100644 --- a/drivers/spi/spi-s3c64xx.c +++ b/drivers/spi/spi-s3c64xx.c @@ -796,16 +796,14 @@ static struct s3c64xx_spi_csinfo *s3c64xx_get_slave_ctrldata( return ERR_PTR(-EINVAL); } - data_np = of_get_child_by_name(slave_np, "controller-data"); - if (!data_np) { - dev_err(&spi->dev, "child node 'controller-data' not found\n"); - return ERR_PTR(-EINVAL); - } - cs = kzalloc(sizeof(*cs), GFP_KERNEL); - if (!cs) { - of_node_put(data_np); + if (!cs) return ERR_PTR(-ENOMEM); + + data_np = of_get_child_by_name(slave_np, "controller-data"); + if (!data_np) { + dev_info(&spi->dev, "feedback delay set to default (0)\n"); + return cs; } of_property_read_u32(data_np, "samsung,spi-feedback-delay", &fb_delay); -- 2.32.0
WARNING: multiple messages have this Message-ID (diff)
From: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> To: Lee Jones <lee.jones@linaro.org>, Rob Herring <robh+dt@kernel.org>, Benson Leung <bleung@chromium.org>, Guenter Roeck <groeck@chromium.org>, Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>, Alim Akhtar <alim.akhtar@samsung.com>, Andi Shyti <andi@etezian.org>, Mark Brown <broonie@kernel.org>, Sam Protsenko <semen.protsenko@linaro.org>, Pratyush Yadav <p.yadav@ti.com>, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-spi@vger.kernel.org Cc: Rob Herring <robh@kernel.org> Subject: [PATCH v6 4/4] spi: s3c64xx: allow controller-data to be optional Date: Mon, 24 Jan 2022 09:23:47 +0100 [thread overview] Message-ID: <20220124082347.32747-5-krzysztof.kozlowski@canonical.com> (raw) In-Reply-To: <20220124082347.32747-1-krzysztof.kozlowski@canonical.com> The Samsung SoC SPI driver requires to provide controller-data node for each of SPI peripheral device nodes. Make this controller-data node optional, so DTS could be simpler. Suggested-by: Rob Herring <robh@kernel.org> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Reviewed-by: Sam Protsenko <semen.protsenko@linaro.org> Reviewed-by: Andi Shyti <andi@etezian.org> --- drivers/spi/spi-s3c64xx.c | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c index 8755cd85e83c..386550fca81c 100644 --- a/drivers/spi/spi-s3c64xx.c +++ b/drivers/spi/spi-s3c64xx.c @@ -796,16 +796,14 @@ static struct s3c64xx_spi_csinfo *s3c64xx_get_slave_ctrldata( return ERR_PTR(-EINVAL); } - data_np = of_get_child_by_name(slave_np, "controller-data"); - if (!data_np) { - dev_err(&spi->dev, "child node 'controller-data' not found\n"); - return ERR_PTR(-EINVAL); - } - cs = kzalloc(sizeof(*cs), GFP_KERNEL); - if (!cs) { - of_node_put(data_np); + if (!cs) return ERR_PTR(-ENOMEM); + + data_np = of_get_child_by_name(slave_np, "controller-data"); + if (!data_np) { + dev_info(&spi->dev, "feedback delay set to default (0)\n"); + return cs; } of_property_read_u32(data_np, "samsung,spi-feedback-delay", &fb_delay); -- 2.32.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2022-01-24 8:24 UTC|newest] Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-01-24 8:23 [PATCH v6 0/4] spi: dt-bindings: samsung: convert to dtschema Krzysztof Kozlowski 2022-01-24 8:23 ` Krzysztof Kozlowski 2022-01-24 8:23 ` [PATCH v6 1/4] " Krzysztof Kozlowski 2022-01-24 8:23 ` Krzysztof Kozlowski 2022-02-04 22:15 ` Rob Herring 2022-02-04 22:15 ` Rob Herring 2022-02-07 18:09 ` Mark Brown 2022-02-07 18:09 ` Mark Brown 2022-02-07 19:45 ` Krzysztof Kozlowski 2022-02-07 19:45 ` Krzysztof Kozlowski 2022-02-14 14:17 ` Lee Jones 2022-02-14 14:17 ` Lee Jones 2022-02-14 14:40 ` Mark Brown 2022-02-14 14:40 ` Mark Brown 2022-02-14 14:47 ` Lee Jones 2022-02-14 14:47 ` Lee Jones 2022-03-07 9:21 ` Lee Jones 2022-03-07 9:21 ` Lee Jones 2022-01-24 8:23 ` [PATCH v6 2/4] mfd: dt-bindings: google,cros-ec: reference Samsung SPI bindings Krzysztof Kozlowski 2022-01-24 8:23 ` [PATCH v6 2/4] mfd: dt-bindings: google, cros-ec: " Krzysztof Kozlowski 2022-02-04 22:15 ` [PATCH v6 2/4] mfd: dt-bindings: google,cros-ec: " Rob Herring 2022-02-04 22:15 ` Rob Herring 2022-03-07 9:21 ` Lee Jones 2022-03-07 9:21 ` Lee Jones 2022-01-24 8:23 ` [PATCH v6 3/4] mfd: dt-bindings: google,cros-ec: fix indentation in example Krzysztof Kozlowski 2022-01-24 8:23 ` [PATCH v6 3/4] mfd: dt-bindings: google, cros-ec: " Krzysztof Kozlowski 2022-02-04 22:16 ` [PATCH v6 3/4] mfd: dt-bindings: google,cros-ec: " Rob Herring 2022-02-04 22:16 ` [PATCH v6 3/4] mfd: dt-bindings: google, cros-ec: " Rob Herring 2022-03-07 9:22 ` [PATCH v6 3/4] mfd: dt-bindings: google,cros-ec: " Lee Jones 2022-03-07 9:22 ` [PATCH v6 3/4] mfd: dt-bindings: google, cros-ec: " Lee Jones 2022-01-24 8:23 ` Krzysztof Kozlowski [this message] 2022-01-24 8:23 ` [PATCH v6 4/4] spi: s3c64xx: allow controller-data to be optional Krzysztof Kozlowski 2022-02-07 18:11 ` Mark Brown 2022-02-07 18:11 ` Mark Brown 2022-03-07 9:22 ` Lee Jones 2022-03-07 9:22 ` Lee Jones 2022-03-02 19:13 ` [PATCH v6 0/4] spi: dt-bindings: samsung: convert to dtschema Krzysztof Kozlowski 2022-03-02 19:13 ` Krzysztof Kozlowski 2022-03-07 13:03 ` [GIT PULL] Immutable branch between MFD, SPI and DT due for the v5.18 merge window Lee Jones 2022-03-07 13:03 ` Lee Jones
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